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by aidenn0 2378 days ago
VOIP over 3g is terrible, and over LTE it's only slightly better. Latency and jitter are both very high, which makes it somewhat hostile to VOIP.
2 comments

VOIP over LTE has been rock solid in my experience with T-Mobile on the east coast. I regularly get on (hands-free) VOIP Zoom calls during my 20 mile commute and almost never have any latency or packet loss issues.
I'm on Tingb(mvno using the T-Mobile networj) and on the West coast. Both zoom and Skype are completely unusable for me.
FWIW, I've been using VOIP for over a year now. I don't make a massive number of calls, but it's perfectly usable over LTE in Western Canada.
Same experience here, using https://voip.ms with Fido.
LTE latency is more than adequate for VoIP, with RTT latency to the tower being around 25ms. Adding another 40, 60, whatever, internet latency for VoIP is still well within the realm of good call quality.
Fair enough. I must have a shitty network. I see 150-200ms pings through LTE with occasional spikes up to 500ms, and any VOIP is both poor quality and we end up talking over each other because of the latency.
Don't all messaging apps like Viber, Whatsapp, telegram etc technically use VOIP, or at least the same type of technology as VOIP? The quality is quite good, for a lot of people.